On 24/02/2015 12:49, Joerg Henne wrote:
This seems to work, however, the disks are not listed by 'ceph-disk list'.
Right. ceph-disk uses GPID partition labels to identify the disks.
Is there a recommended way of running an OSD on top of a LVM volume? What
are the pros and cons of the approaches? Is there a downside to the disks
not being listed by 'ceph-disk list' as per the first approach?
I imagine that without proper partition labels you'll also not get the
benefit of e.g. the udev magic
that allows plugging OSDs in/out of different hosts. More generally
you'll just be in a rather non standard configuration that will confuse
anyone working on the host.
Can I ask why you want to use LVM? It is not generally necessary or
useful with Ceph: Ceph expects to be fed raw drives.
John
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